After changing my Sesame's batteries, I can connect to it using the Sesame app, but the app says Wifi Access is disconnected, and 90% of the time I get the above message when I try to operate via the API, either Google Home, IFTTT, or the Candy House dashboard, like "jdr unlock by Google Home FAILED because of a BLUETOOTH CONNECTIVITY ERROR!". Very occasionally it works.
I've restarted the Wifi Module, unlinked and relinked the Sesame, and even reset the Sesame using the pinhole and re-set it up. Nothing seems to help. Any pointers?